Verification of the 'RNA metabolic relay disorder' hypothesis in Frontotemporal Dementia.
Project/Area Number |
20H03602
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 52030:Psychiatry-related
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Research Institution | Osaka University |
Principal Investigator |
Mori Kohji 大阪大学, 大学院医学系研究科, 講師 (40775318)
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Project Status |
Completed (Fiscal Year 2022)
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Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2022: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2021: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2020: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
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Keywords | 前頭側頭葉変性症 / RNA代謝 / 近接ビオチン化法 / C9orf72 / 近位ビオチン化法 / RNA結合タンパク質 / 前頭側頭型認知症 / リピートRNA / RNA / FTLD / ALS / DPR / RNA分解 / RAN翻訳 / リピート病 / 精神疾患 |
Outline of Research at the Start |
C9orf72のイントロンに存在するGGGGCCリピートの異常延長は前頭側頭型認知症および類縁疾患である運動ニューロン病を引き起こす。我々は、これまでにリピートの翻訳産物であるジペプチドリピートタンパクやリピートRNAに結合するタンパクが疾患病態に関与することを明らかにしてきた。本研究ではこのDPRタンパクの源であるリピートRNAの蓄積機序の詳しい仕組みを明らかにし、FTDの分子病態を解明するとともに、新規治療標的の同定へと繋げる。
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Outline of Final Research Achievements |
The C9orf72 repeat expansion mutation is a major causative genetic mutation in familial frontotemporal lobar degeneration (frontotemporal dementia) and amyotrophic lateral sclerosis. We have previously found that the pathogenic GGGGCC repeat RNA-binding protein hnRNPA3 promotes repeat RNA metabolism, but the mechanism is unknown. In this study, we used a combination of proximal biotinylation and mass spectrometry to comprehensively delineate the neighbourhood of hnRNPA3 and identify a promising novel factor involved in GGGGCC repeat RNA metabolism.
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Academic Significance and Societal Importance of the Research Achievements |
C9orf72変異型の前頭側頭葉変性症・筋萎縮性側索硬化症では、細胞内に病原性GGGGCCリピートRNAが蓄積されている。GGGGCCリピートRNAの分解を促進することができれば、新たな治療法の開発につながる。本研究はいまだ不明な点が多い、GGGGCCリピートRNAの代謝経路の一端を明らかにしたものである。本研究の成果を応用し、RNA分解の観点からC9orf72変異型の前頭側頭葉変性症・筋萎縮性側索硬化症の新たな治療法の開発につなげていきたい。
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Report
(4 results)
Research Products
(52 results)
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[Journal Article] The porphyrin TMPyP4 inhibits elongation during the noncanonical translation of the FTLD/ALS-associated GGGGCC repeat in the C9orf72 gene2021
Author(s)
Mori K, Gotoh S, Yamashita T, Uozumi R, Kawabe Y, Tagami S, Kamp F, Nuscher B, Edbauer D, Haass C, Nagai Y, Ikeda M
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Journal Title
J Biol Chem
Volume: 297
Issue: 4
Pages: 101120-101120
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Renal Function is Associated with Blood Neurofilament Light Chain Level in Older Adults2020
Author(s)
Akamine S, Marutani N, Kanayama D, Gotoh S, Maruyama R, Yanagida K, Sakagami Y, Mori K, Adachi H, Kozawa J, Maeda N, Otsuki M, Matsuoka T, Iwahashi H, Shimomura I, Ikeda M, Kudo T
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Journal Title
Scientific Reports
Volume: 10
Issue: 1
Pages: 20350-20350
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] Suppression of a novel RAN translation regulator reduce poly-GA DPR expression in a cellular model of C9orf72 FTLD/ALS2023
Author(s)
Shiho Gotoh, Kohji Mori, Tesshin Miyamoto, Ryota Uozumi, Tomoko Yamashita, Yuya Kawabe, Shoshin Akamine, Tsubasa Omi, Shizuko Kondo, Yoshitaka Nagai, Manabu Ikeda
Organizer
AD/PD2023,Gothenburg, Sweden
Related Report
Int'l Joint Research
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[Presentation] Proximity labelling proteomics identified a novel molecule in the C9orf72 repeat RNA degradation pathway in FTLD/ALS2023
Author(s)
Ryota Uozumi, Kohji Mori, Shiho Gotoh, Tesshin Miyamoto, Shizuko Kondo, Tomoko Yamashita, Shoshin Akamine, Yuya Kawabe, Manabu Ikeda
Organizer
AD/PD2023, Gothenburg, Sweden
Related Report
Int'l Joint Research
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[Presentation] siRNA-knockdown screening for potential RAN translation modulators in cellular models of C9orf72 FTLD/ALS2022
Author(s)
Kohji Mori, Shiho Gotoh, Ryota Uozumi, Tesshin Miyamoto, Shizuko Kondo, Tomoko Yamashita, Yuya Kawabe, Shoshin Akamine, Yoshitaka Nagai, Manabu Ikeda
Organizer
International Society for Frontotemporal Dementias (ISFTD2022), 2-5th Nov, 2022, Paris & Lille, France
Related Report
Int'l Joint Research
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[Presentation] Functional analysis of a potential RAN translation regulator in C9orf72 FTLD/ALS2022
Author(s)
Shiho Gotoh, Kohji Mori, Tesshin Miyamoto, Ryota Uozumi, Tomoko Yamashita, Yuya Kawabe, Shoshin Akamine, Tsubasa Omi, Shizuko Kondo, Yoshitaka Nagai, Manabu Ikeda
Organizer
International Society for Frontotemporal Dementias (ISFTD2022), 2-5th Nov, 2022, Paris & Lille, France
Related Report
Int'l Joint Research
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[Presentation] 精神科認知症コホートにおけるNOTCH2NLC遺伝子GGCリピート長の解析2022
Author(s)
宮本 哲愼, 森 康治, 魚住 亮太, 後藤 志帆, 山下 智子, 近藤 志都子, 赤嶺 祥真, 佐竹祐人, 佐藤 俊介, 鐘本 英輝, 吉山 顕次, 山本 美都子, 工藤 喬, 森原 剛史, 池田 学
Organizer
第41回日本認知症学会/第37回日本老年精神医学会 合同開催, 2022.11.25-27, 東京
Related Report
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[Presentation] A novel modulator of RAN translation in C9orf72 FTLD/ALS2021
Author(s)
Shiho Gotoh, Kohji Mori, Tomoko Yamashita, Yuya Kawabe, Tsubasa Omi, Tesshin Miyamoto, Ryota Uozumi, Shizuko Kondo, Manabu Ikeda
Organizer
第64回日本神経化学会大会, 一般演題(口頭), 奈良・オンライン 2021.9.30
Related Report
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